In 1960, Hans-Jürgen Berger developed and produced first photographic flashers. Since having sold the first flasher to the German space company MBB in 1973, the company continuously developed conventional high-power flashers into real solar simulators.

In 1997 Detlev Berger took over the company from his father. BERGER Lichttechnik has since developed a wide variety of products for terrestrial and extra-terrestrial solar simulation and testing of solar modules, arrays and cells and increased business at least fivefold.





Delivery of the two thousand five hundredths system



Market introduction of next generation software with completely redesigned user interface, automatic parameter adjustment and Smart Operator functions for reduced maintenance and operation costs



Development of single cell tester load and measurement units with integrated dark forward, dark reverse and EL power and higher maximum data points for measuring high efficiency cells



Development of climatic chamber for automated determination of temperature coefficients and operator free measurements at different irradiances and temperature levels
Philipp Schreier is appointed as Chief Technology Officer, Kai Kopplin as Chief Operations Officer



Development of module handling systems for simplified integration in production lines, both for tower and tunnel systems
Market introduction of second generation of complete testing units with flasher, high voltage, insulation and ground leakage tests for fully automatic production lines



Development of sub-IV-curve technology for measuring DUT’s with higher efficiencies showing capacitive effects during standard measurement
Development of a single cell flasher system with longer illumination times
Market introduction of a 35 KJ system for space applications



Integration of EL-Imaging for module testers
Delivery of the two thousandth tester system



Delivery of the thousand five hundredth tester system



Integration of EL-Imaging for single cell testers
Delivery of the thousandth tester system



Delivery of the five hundredth tester system



Development of an add-on measuring box for dark-forward testing and resistance measurements between the bus bars of a solar cell
Requirements for uniformity made the development of tunnel and tower systems necessary to provide stable enclosures for stable measurements
Integration of hotspot detection through IR-Imaging for single cell testers



Delivery of the hundredth tester system



Development of a single cell flasher system with two illumination ranges in one flash for measurement of up to three IV curves, including one dark reverse
Production of a complete testing unit with flasher, high voltage, insulation and ground leakage tester for fully automatic production lines of FLABEG



Development of a PC-controlled three channel measuring and load simulation device for registration of IV curves of PV solar cells, arrays and modules. Due to the particular adjustment of measuring electronics and flasher all Dualjunction-, Triplejunction- and Concentratorcells can be measured as well.



Further development of high-power long-term flashers for measuring of terrestrial solar cells and modules



Development and production of a single cell flasher with 10 ms peak time and accuracy of 0,5 % for DASA



Hans-Jürgen Berger retires
Dissolution of the company BCL-Lichttechnik
BERGER Lichttechnik acquires the equipment, machines and devices



Development and production of a thermal light Pulsed Simulator with 150 KW power with only one XBO bulb, for material testing in military applications
Delivery of further 40 KJ devices to AEG Wedel and MBB



Development and production of a 40 KJ Pulsed-Solar-Simulator for ESA, accuracy in energy and AM0-Spectrum < 1%
Delivery of an entire test station for solar panels to SIEMENS-INTERATOM



Detlev Berger is hired officially as development manager in his father’s company
Agreements for developments with OSRAM about Xenon lights and ballasts



Development and production of 10.000 Jl Rectangular-Flashers
Serial production of Light-Curing-Devices HERAEUS KULZER starts



Development of strobe flasher systems for light curing of medical synthetics
Development and production of a solar cell flasher with AM0 spectrum for MBB
Acquisition of the ROLLEI-Studio-Light System including all patents



Further development of low-voltage Pulsed Solar Simulators with up to 24.000 Jl for MBB, AEG, SOLAREX and SIEMENS



First collaboration of Detlev Berger in his father’s company



Delivery of first flasher for solar simulation on photovoltaic systems to MBB



Application of a flasher system for color determination by KODAK



Worldwide distribution by ROLLEI-Werke Braunschweig



Patent for flash tubes and halogen lamps with joint radiant emittance



Development of low-voltage flashers for photography by Hans-Jürgen Berger